[Abstract] Objective To explore the correlation between serum cardiotype fatty acid-binding protein (H-FABP) levels and the disease outcome of patients with acute myocardial infarction (AMI), and the diagnostic efficacy of combined thromboelastography (TEG) related parameters. Methods: A total of 137 AMI patients admitted to our hospital from August 2022 to September 2024 were selected as the research subjects. All patients received percutaneous coronary intervention (PCI) treatment. The patients were divided into the good prognosis group (102 cases) and the poor prognosis group (35 cases) based on whether major adverse cardiovascular events occurred 6 months after PCI. The serum H-FABP levels and TEG-related parameters [coagulation reaction time (R), blood clot formation time (K), blood clot formation rate (α Angle), maximum amplitude after blood clot formation (MA)] three days after PCI in the two groups were compared, and the correlation between the two and the risk factors affecting the prognosis of AMI patients were analyzed. And the predictive value of serum H-FABP level combined with TEG parameters for poor prognosis in AMI patients. Results: Compared with the good prognosis group, the serum H-FABP level, α Angle and MA value were higher in the poor prognosis group 3 days after PCI, while the R value and K value were lower (P < 0.05); Three days after PCI, the serum H-FABP level, α Angle and MA value were positively correlated with poor prognosis, while the R value and K value were negatively correlated with poor prognosis (P < 0.05). Logistic regression analysis showed that after adjusting for the time from onset to PCI, and the levels of serum CK, CK-MB, cTnI, and BNP 3 days after PCI, the level of H-FABP, R value, K value, α Angle, and MA value remained the influencing factors for poor prognosis in AMI patients (P < 0.05); The results of the ROC curve showed that the AUC of serum H-FABP level three days after PCI combined with R value, K value, α Angle and MA value in predicting poor prognosis of AMI patients was superior to a single diagnosis. Conclusion: The serum H-FABP level is related to the prognostic effect of AMI patients after PCI. Combined diagnosis with TEG-related parameters can improve the predictive value of poor prognosis in clinical practice. |